config.gcc (sparc-*-elf*): Add sparc/t-crtin.

config.gcc (sparc-*-elf*): Add sparc/t-crtin.

	* config.gcc (sparc-*-elf*): Add sparc/t-crtin.
	(sparc-*-rtems*): Likewise.
	(sparc64-*-elf*): Likewise.
	(sparc64-*-rtems*): Likewise.
	(sparc*-*-solaris2*): Likewise.  Remove crti.o crtn.o extra parts.
	* config/sparc/t-crtin: New file.
	* config/sparc/t-sol2 (crti.o): Delete rule.
	(crtn.o): Likewise.
	* config/sparc/t-linux64 (EXTRA_MULTILIB_PARTS): Delete.
	* config/sparc/t-sol2-64 (EXTRA_MULTILIB_PARTS): Likewise.
	* config/sparc/sp64-elf.h (STARTFILE_SPEC): Tidy and add crti.o.
	(ENDFILE_SPEC): Add crtn.o.

From-SVN: r174041